After you file

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@Geppo wrote:

Thank you for this answer. I cannot find an "Add a State" option in TurboTax. I already filed both my Federal and California State taxes, and all I can find is the "amend" option. Could you help me find the correct option?

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If you used the TurboTax online editions to complete and file the 2022 tax return, you have to scroll down to the bottom of the Tax Home page when you sign onto your TurboTax online account - 

To access your current or prior year online tax returns sign onto the TurboTax website with the User ID you used to create the account - https://myturbotax.intuit.com/

When you sign onto your online account and land on the Tax Home web page, scroll down and click on Add a state. 

This will take you back to the 2022 online tax return.